Lower Orange WMA

Chemical classification run on 2006-12-18 - 15:50:03

154 quaternary drainage regions overlap Lower Orange WMA

(1) Catchment C51M: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
C5H016Q01	692	at Estate Biesiesbult Aucampshoop on Rie	1
C5H048Q01	733	at Zoutpansdrift on Rietrivier	2

C51M - Stations used: 2, Samples selected: 248 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	248	7.41	C5H048Q01	8.24	C5H048Q01	8.44	C5H048Q01	8.68	C5H048Q01	-log [H+]
Fluoride	248	0.1	C5H048Q01	0.31	C5H048Q01	0.36	C5H048Q01	0.61	C5H048Q01	mg l -1
NO3(N)	248	0.02	C5H048Q01	0.055	C5H048Q01	0.237	C5H016Q01	0.967	C5H048Q01	mg l -1
Sulphate	248	9.6	C5H016Q01	192.7	C5H048Q01	366.5	C5H048Q01	528.5	C5H048Q01	mg l -1
Chloride	248	5	C5H016Q01	243.8	C5H048Q01	474.2	C5H048Q01	647.6	C5H048Q01	mg l -1
Sodium	248	4.9	C5H016Q01	155.7	C5H048Q01	285.7	C5H048Q01	418.9	C5H048Q01	mg l -1
Magnesium	248	6.1	C5H016Q01	55.3	C5H048Q01	97.4	C5H048Q01	133.9	C5H048Q01	mg l -1
TDS	248	142	C5H016Q01	919	C5H048Q01	1556	C5H048Q01	2071	C5H048Q01	mg l -1
Conductivity	248	18	C5H016Q01	151	C5H048Q01	259.2	C5H048Q01	344	C5H048Q01	mS m -1

Summary of classification (consituents in each range in brackets): C51M n=248 Class 2: I(SO4) II(Cl Na Mg TDS EC)

(2) Catchment C92B: Total number of "H...Q" (flow gauging, quality) stations = 7.

Station	total n samples	description	map code
C9H023Q01	42	Vaal River at Schmidtsdrift Flood Secti	3
C9H024Q01	169	at Schmidtsdrift Weir on Vaal River	4
C9H019Q01	597	Douglas Barrage on Vaal River: Artherton	5
C9H017Q01	600	Douglas Barrage on Vaal River: Bucklands	6
C9H016Q01	canal	Vaal River: Left Bank Canal at St Claire	none
C9H007Q01	130	Vaal River at St Claire-Douglas	7
C9H025Q01	canal	Orange-Vaal Canal at St Clair-Douglas BA	none

C92B - Stations used: 5, Samples selected: 532 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	532	7.33	C9H017Q01	8.22	C9H019Q01	8.46	C9H017Q01	8.87	C9H019Q01	-log [H+]
Fluoride	532	0.05	C9H019Q01	0.33	C9H019Q01	0.45	C9H024Q01	0.61	C9H024Q01	mg l -1
NO3(N)	532	0.02	C9H017Q01	0.119	C9H017Q01	0.282	C9H017Q01	0.635	C9H019Q01	mg l -1
Sulphate	532	10.8	C9H017Q01	151.4	C9H024Q01	236	C9H017Q01	368.9	C9H017Q01	mg l -1
Chloride	532	5.9	C9H017Q01	105.1	C9H019Q01	167.5	C9H024Q01	263.9	C9H019Q01	mg l -1
Sodium	532	8.1	C9H017Q01	83.9	C9H019Q01	132.7	C9H019Q01	179.2	C9H017Q01	mg l -1
Magnesium	532	7.2	C9H017Q01	35.6	C9H017Q01	53.2	C9H017Q01	73.5	C9H017Q01	mg l -1
TDS	532	163	C9H017Q01	596	C9H019Q01	814	C9H017Q01	1122	C9H017Q01	mg l -1
Conductivity	532	21.8	C9H017Q01	89.5	C9H024Q01	123.7	C9H019Q01	167	C9H017Q01	mS m -1

Summary of classification (consituents in each range in brackets): C92B n=532 Class 1: I(SO4 Cl Na Mg TDS EC)

(3) Catchment C92C: Total number of "H...Q" (flow gauging, quality) stations = 6.

Station	total n samples	description	map code
C9H019Q01	597	Douglas Barrage on Vaal River: Artherton	8
C9H017Q01	600	Douglas Barrage on Vaal River: Bucklands	9
C9H016Q01	canal	Vaal River: Left Bank Canal at St Claire	none
C9H007Q01	130	Vaal River at St Claire-Douglas	10
C9H025Q01	canal	Orange-Vaal Canal at St Clair-Douglas BA	none
C9H011Q01	72	Vaal River at Douglas Bridge	11

C92C - Stations used: 4, Samples selected: 464 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	464	7.33	C9H017Q01	8.22	C9H017Q01	8.47	C9H017Q01	8.87	C9H019Q01	-log [H+]
Fluoride	464	0.05	C9H019Q01	0.32	C9H017Q01	0.43	C9H017Q01	0.55	C9H019Q01	mg l -1
NO3(N)	464	0.02	C9H017Q01	0.147	C9H019Q01	0.291	C9H019Q01	0.635	C9H019Q01	mg l -1
Sulphate	464	10.8	C9H017Q01	147.4	C9H019Q01	225.2	C9H017Q01	368.9	C9H017Q01	mg l -1
Chloride	464	5.9	C9H017Q01	112.2	C9H017Q01	172.9	C9H017Q01	263.9	C9H019Q01	mg l -1
Sodium	464	8.1	C9H017Q01	86.1	C9H017Q01	133	C9H017Q01	179.2	C9H017Q01	mg l -1
Magnesium	464	7.2	C9H017Q01	35	C9H019Q01	50.9	C9H017Q01	73.5	C9H017Q01	mg l -1
TDS	464	163	C9H017Q01	596	C9H019Q01	808	C9H019Q01	1122	C9H017Q01	mg l -1
Conductivity	464	21.8	C9H017Q01	89.8	C9H019Q01	123.5	C9H019Q01	167	C9H017Q01	mS m -1

Summary of classification (consituents in each range in brackets): C92C n=464 Class 1: I(SO4 Cl Na Mg TDS EC)

(5) Catchment D33K: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D3H019Q01	canal	Oranje-Vaal Canal at Nottingham	none
D3H008Q01	1050	at Marksdrift on Orange River	12

D33K - Stations used: 1, Samples selected: 238 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	238	7.26	D3H008Q01	8.11	D3H008Q01	8.25	D3H008Q01	8.5	D3H008Q01	-log [H+]
Fluoride	238	0.05	D3H008Q01	0.18	D3H008Q01	0.21	D3H008Q01	0.47	D3H008Q01	mg l -1
NO3(N)	238	0.02	D3H008Q01	0.354	D3H008Q01	0.509	D3H008Q01	0.708	D3H008Q01	mg l -1
Sulphate	238	5.8	D3H008Q01	12.2	D3H008Q01	16.8	D3H008Q01	139.4	D3H008Q01	mg l -1
Chloride	238	2.5	D3H008Q01	6.1	D3H008Q01	11.2	D3H008Q01	163.6	D3H008Q01	mg l -1
Sodium	238	4.2	D3H008Q01	8.4	D3H008Q01	12.1	D3H008Q01	109.1	D3H008Q01	mg l -1
Magnesium	238	4.4	D3H008Q01	7.7	D3H008Q01	9.4	D3H008Q01	39.6	D3H008Q01	mg l -1
TDS	238	121	D3H008Q01	162	D3H008Q01	189	D3H008Q01	684	D3H008Q01	mg l -1
Conductivity	238	16	D3H008Q01	22.5	D3H008Q01	26.3	D3H008Q01	107.4	D3H008Q01	mS m -1

Summary of classification: D33K n=238 Class 0

(12) Catchment D51B: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H011Q01	16	Renoster River at Bonekraal	13

D51B - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(13) Catchment D51C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H011Q01	16	Renoster River at Bonekraal	14

D51C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(16) Catchment D52C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H003Q01	15	Fish River at Hardeheuwel-Harderug	15

D52C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(18) Catchment D52E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H003Q01	15	Fish River at Hardeheuwel-Harderug	16

D52E - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(19) Catchment D52F: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H022Q01	0	Moutonsdrift	none

(40) Catchment D55E: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D5H004Q01	8	Sak River at Tabaks Fontein-Vastrap	17
D5H019Q01	13	Sak River at Tabaks Fontein	18

D55E - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(43) Catchment D55H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H013Q01	1	Sakriver at Windhoek-Dagbreek	19

D55H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(44) Catchment D55J: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H013Q01	1	Sakriver at Windhoek-Dagbreek	20

D55J - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(46) Catchment D55L: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D5H018Q01	116	Sak River at Williston Commonage	21
D5H021Q01	63	Sak River at De Kruis-Williston	22

D55L - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(55) Catchment D56H: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H015Q01	1	Riet River at Zandheuvel	23

D56H - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(56) Catchment D56J: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H015Q01	1	Riet River at Zandheuvel	24

D56J - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(57) Catchment D57A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H014Q01	2	Sakriver at Tontelbosch Kolk-Nelskop	25

D57A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(59) Catchment D57C: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D5H016Q01	20	Sak River at Hol Pads Leegte	26
D5H014Q01	2	Sakriver at Tontelbosch Kolk-Nelskop	27

D57C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(60) Catchment D57D: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H016Q01	20	Sak River at Hol Pads Leegte	28

D57D - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(62) Catchment D58A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D5H017Q01	31	Renoster River at Leeuwenkuil	29

D58A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(76) Catchment D61M: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D6H004Q01	dam	Smartt Syndicate Dam on Ongers River: Le	none

D61M - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(77) Catchment D62A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D6H004Q01	dam	Smartt Syndicate Dam on Ongers River: Le	none

D62A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(85) Catchment D62J: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D6H003Q01	0	at Uitdraai De Wet Se Boom on Brakrivier	none

(86) Catchment D71A: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D7H011Q01	2	Orange River at Rooikop	30
D7H012Q01	16	Orange River at Irene	31

D71A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(90) Catchment D72A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D7H002Q01	609	Orange River at Prieska	32

D72A - not classified: 1 samples between 2001-01-01 and 2005-12-31, 1 valid samples. Require at least 5.

(91) Catchment D72B: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D7H009Q01	5	Orange River at Rietfontein-Koegas	33
D7H002Q01	609	Orange River at Prieska	34

D72B - not classified: 1 samples between 2001-01-01 and 2005-12-31, 1 valid samples. Require at least 5.

(92) Catchment D72C: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D7H013Q01	dam	Boegoeberg Dam on Orange River: Left Can	none
D7H009Q01	5	Orange River at Rietfontein-Koegas	35

D72C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(94) Catchment D73B: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D7H008Q01	892	Orange River at Boegoeberg Reserve-Zeeko	36
D7H013Q01	dam	Boegoeberg Dam on Orange River: Left Can	none

D73B - Stations used: 1, Samples selected: 195 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	195	7.17	D7H008Q01	8.11	D7H008Q01	8.56	D7H008Q01	9.33	D7H008Q01	-log [H+]
Fluoride	195	0.1	D7H008Q01	0.19	D7H008Q01	0.23	D7H008Q01	0.28	D7H008Q01	mg l -1
NO3(N)	195	0.02	D7H008Q01	0.163	D7H008Q01	0.472	D7H008Q01	1.208	D7H008Q01	mg l -1
Sulphate	195	4.6	D7H008Q01	21	D7H008Q01	47.3	D7H008Q01	69.6	D7H008Q01	mg l -1
Chloride	195	5	D7H008Q01	14.5	D7H008Q01	35.6	D7H008Q01	58.1	D7H008Q01	mg l -1
Sodium	195	5	D7H008Q01	14	D7H008Q01	31	D7H008Q01	43.5	D7H008Q01	mg l -1
Magnesium	195	4.1	D7H008Q01	10.1	D7H008Q01	16.1	D7H008Q01	19.4	D7H008Q01	mg l -1
TDS	195	98	D7H008Q01	202	D7H008Q01	304	D7H008Q01	353	D7H008Q01	mg l -1
Conductivity	195	15.8	D7H008Q01	29.3	D7H008Q01	45.6	D7H008Q01	54.3	D7H008Q01	mS m -1

Summary of classification: D73B n=195 Class 0

(97) Catchment D73E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D7H005Q01	379	Orange River at Upington	37

D73E - Stations used: 1, Samples selected: 109 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	109	7.64	D7H005Q01	8.21	D7H005Q01	8.37	D7H005Q01	8.86	D7H005Q01	-log [H+]
Fluoride	109	0.16	D7H005Q01	0.23	D7H005Q01	0.28	D7H005Q01	1.24	D7H005Q01	mg l -1
NO3(N)	109	0.02	D7H005Q01	0.075	D7H005Q01	0.426	D7H005Q01	1.572	D7H005Q01	mg l -1
Sulphate	109	9.3	D7H005Q01	27	D7H005Q01	64.7	D7H005Q01	134.3	D7H005Q01	mg l -1
Chloride	109	5	D7H005Q01	20.6	D7H005Q01	48.9	D7H005Q01	117.9	D7H005Q01	mg l -1
Sodium	109	7.8	D7H005Q01	20.8	D7H005Q01	45.2	D7H005Q01	102.7	D7H005Q01	mg l -1
Magnesium	109	7.1	D7H005Q01	12.3	D7H005Q01	20.7	D7H005Q01	37.8	D7H005Q01	mg l -1
TDS	109	148	D7H005Q01	242	D7H005Q01	382	D7H005Q01	675	D7H005Q01	mg l -1
Conductivity	109	21.3	D7H005Q01	35.4	D7H005Q01	57	D7H005Q01	94.5	D7H005Q01	mS m -1

Summary of classification: D73E n=109 Class 0

(98) Catchment D73F: Total number of "H...Q" (flow gauging, quality) stations = 6.

Station	total n samples	description	map code
D7H005Q01	379	Orange River at Upington	38
D7H004Q01	88	Orange River at Kanon Island Right Side	39
D7H003Q01	201	Orange River at Kakamas	40
D7H016Q01	canal	North Canal From Orange River at Kakamas	none
D7H014Q01	129	Orange River at Kakamas South-Neusberg L	41
D7H015Q01	canal	South Canal From Orange River at Kakamas	none

D73F - Stations used: 4, Samples selected: 147 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	147	7.46	D7H014Q01	8.21	D7H014Q01	8.4	D7H005Q01	8.86	D7H005Q01	-log [H+]
Fluoride	147	0.16	D7H005Q01	0.23	D7H014Q01	0.27	D7H005Q01	1.24	D7H005Q01	mg l -1
NO3(N)	147	0.02	D7H014Q01	0.084	D7H005Q01	0.422	D7H014Q01	1.572	D7H005Q01	mg l -1
Sulphate	147	9.3	D7H005Q01	27.1	D7H014Q01	61.8	D7H005Q01	134.3	D7H005Q01	mg l -1
Chloride	147	5	D7H005Q01	19.2	D7H005Q01	45.6	D7H005Q01	117.9	D7H005Q01	mg l -1
Sodium	147	6.3	D7H014Q01	19.5	D7H014Q01	43.6	D7H005Q01	102.7	D7H005Q01	mg l -1
Magnesium	147	7.1	D7H005Q01	12.2	D7H005Q01	18.9	D7H005Q01	37.8	D7H005Q01	mg l -1
TDS	147	148	D7H014Q01	241	D7H005Q01	356	D7H005Q01	675	D7H005Q01	mg l -1
Conductivity	147	21.3	D7H005Q01	34.3	D7H005Q01	53	D7H005Q01	94.5	D7H005Q01	mS m -1

Summary of classification: D73F n=147 Class 0

(99) Catchment D81A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D8H002Q01	7	Orange River at Kakamas South-Renosterko	42

D81A - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(103) Catchment D81E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D8H004Q01	943	Orange River at Onseepkans	43

D81E - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(104) Catchment D81F: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D8H004Q01	943	Orange River at Onseepkans	44
D8H008Q01	545	Orange River at Pella Mission	45

D81F - Stations used: 2, Samples selected: 245 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	245	7.85	D8H008Q01	8.25	D8H008Q01	8.43	D8H008Q01	8.66	D8H008Q01	-log [H+]
Fluoride	245	0.05	D8H008Q01	0.3	D8H008Q01	0.39	D8H008Q01	0.51	D8H008Q01	mg l -1
NO3(N)	245	0.02	D8H008Q01	0.055	D8H008Q01	0.359	D8H008Q01	3.17	D8H008Q01	mg l -1
Sulphate	245	11.5	D8H008Q01	34	D8H008Q01	72.7	D8H008Q01	101.6	D8H008Q01	mg l -1
Chloride	245	5	D8H008Q01	26	D8H008Q01	57.2	D8H008Q01	76.3	D8H008Q01	mg l -1
Sodium	245	5.8	D8H008Q01	26	D8H008Q01	57	D8H008Q01	76.7	D8H008Q01	mg l -1
Magnesium	245	7.2	D8H008Q01	14.2	D8H008Q01	21.9	D8H008Q01	26.3	D8H008Q01	mg l -1
TDS	245	151	D8H008Q01	286	D8H008Q01	448	D8H008Q01	513	D8H008Q01	mg l -1
Conductivity	245	21.7	D8H008Q01	40.8	D8H008Q01	65.2	D8H008Q01	75.2	D8H008Q01	mS m -1

Summary of classification: D81F n=245 Class 0

(105) Catchment D81G: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D8H008Q01	545	Orange River at Pella Mission	46

D81G - Stations used: 1, Samples selected: 245 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	245	7.85	D8H008Q01	8.25	D8H008Q01	8.43	D8H008Q01	8.66	D8H008Q01	-log [H+]
Fluoride	245	0.05	D8H008Q01	0.3	D8H008Q01	0.39	D8H008Q01	0.51	D8H008Q01	mg l -1
NO3(N)	245	0.02	D8H008Q01	0.055	D8H008Q01	0.359	D8H008Q01	3.17	D8H008Q01	mg l -1
Sulphate	245	11.5	D8H008Q01	34	D8H008Q01	72.7	D8H008Q01	101.6	D8H008Q01	mg l -1
Chloride	245	5	D8H008Q01	26	D8H008Q01	57.2	D8H008Q01	76.3	D8H008Q01	mg l -1
Sodium	245	5.8	D8H008Q01	26	D8H008Q01	57	D8H008Q01	76.7	D8H008Q01	mg l -1
Magnesium	245	7.2	D8H008Q01	14.2	D8H008Q01	21.9	D8H008Q01	26.3	D8H008Q01	mg l -1
TDS	245	151	D8H008Q01	286	D8H008Q01	448	D8H008Q01	513	D8H008Q01	mg l -1
Conductivity	245	21.7	D8H008Q01	40.8	D8H008Q01	65.2	D8H008Q01	75.2	D8H008Q01	mS m -1

Summary of classification: D81G n=245 Class 0

(106) Catchment D82A: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D8H005Q01	29	Orange River at Goodhouse	47

D82A - not classified: 1 samples between 2001-01-01 and 2005-12-31, 1 valid samples. Require at least 5.

(110) Catchment D82E: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D8H003Q01	1346	at Vioolsdrift on Orange	48

D82E - Stations used: 1, Samples selected: 235 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	235	7.47	D8H003Q01	8.3	D8H003Q01	8.44	D8H003Q01	8.61	D8H003Q01	-log [H+]
Fluoride	235	0.17	D8H003Q01	0.34	D8H003Q01	0.44	D8H003Q01	0.59	D8H003Q01	mg l -1
NO3(N)	235	0.02	D8H003Q01	0.054	D8H003Q01	0.128	D8H003Q01	0.513	D8H003Q01	mg l -1
Sulphate	235	6.4	D8H003Q01	37.2	D8H003Q01	81	D8H003Q01	100.4	D8H003Q01	mg l -1
Chloride	235	5	D8H003Q01	30.4	D8H003Q01	69.3	D8H003Q01	86.2	D8H003Q01	mg l -1
Sodium	235	7.5	D8H003Q01	32	D8H003Q01	65.8	D8H003Q01	78.8	D8H003Q01	mg l -1
Magnesium	235	7.3	D8H003Q01	15.3	D8H003Q01	24.3	D8H003Q01	27.5	D8H003Q01	mg l -1
TDS	235	152	D8H003Q01	310	D8H003Q01	483	D8H003Q01	532	D8H003Q01	mg l -1
Conductivity	235	21.8	D8H003Q01	44.8	D8H003Q01	69.6	D8H003Q01	76.3	D8H003Q01	mS m -1

Summary of classification (consituents in each range in brackets): D82E n=235 Class 1: I(TDS)

(111) Catchment D82F: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D8H003Q01	1346	at Vioolsdrift on Orange	49

D82F - Stations used: 1, Samples selected: 235 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	235	7.47	D8H003Q01	8.3	D8H003Q01	8.44	D8H003Q01	8.61	D8H003Q01	-log [H+]
Fluoride	235	0.17	D8H003Q01	0.34	D8H003Q01	0.44	D8H003Q01	0.59	D8H003Q01	mg l -1
NO3(N)	235	0.02	D8H003Q01	0.054	D8H003Q01	0.128	D8H003Q01	0.513	D8H003Q01	mg l -1
Sulphate	235	6.4	D8H003Q01	37.2	D8H003Q01	81	D8H003Q01	100.4	D8H003Q01	mg l -1
Chloride	235	5	D8H003Q01	30.4	D8H003Q01	69.3	D8H003Q01	86.2	D8H003Q01	mg l -1
Sodium	235	7.5	D8H003Q01	32	D8H003Q01	65.8	D8H003Q01	78.8	D8H003Q01	mg l -1
Magnesium	235	7.3	D8H003Q01	15.3	D8H003Q01	24.3	D8H003Q01	27.5	D8H003Q01	mg l -1
TDS	235	152	D8H003Q01	310	D8H003Q01	483	D8H003Q01	532	D8H003Q01	mg l -1
Conductivity	235	21.8	D8H003Q01	44.8	D8H003Q01	69.6	D8H003Q01	76.3	D8H003Q01	mS m -1

Summary of classification (consituents in each range in brackets): D82F n=235 Class 1: I(TDS)

(115) Catchment D82K: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
D8H006Q01	105	Orange River at Richtersveld-Rosh Pinah	50

D82K - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(116) Catchment D82L: Total number of "H...Q" (flow gauging, quality) stations = 2.

Station	total n samples	description	map code
D8H007Q01	412	Orange River at Korridor-Brand Kaross	51
D8H012Q01	263	Orange River at Alexander Bay @ Sir Erne	52

D82L - Stations used: 2, Samples selected: 15 between 2001-01-01 and 2005-12-31.

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	15	7.54	D8H012Q01	8.21	D8H012Q01	8.4	D8H007Q01	8.42	D8H012Q01	-log [H+]
Fluoride	15	0.19	D8H012Q01	0.25	D8H012Q01	0.3	D8H012Q01	0.33	D8H012Q01	mg l -1
NO3(N)	15	0.02	D8H012Q01	0.208	D8H012Q01	0.699	D8H007Q01	0.786	D8H007Q01	mg l -1
Sulphate	15	23.3	D8H007Q01	47.8	D8H012Q01	80.9	D8H012Q01	124.1	D8H012Q01	mg l -1
Chloride	15	11.6	D8H007Q01	26.1	D8H012Q01	38.2	D8H012Q01	62.7	D8H012Q01	mg l -1
Sodium	15	11.3	D8H007Q01	27.6	D8H012Q01	42.3	D8H012Q01	89.4	D8H012Q01	mg l -1
Magnesium	15	8.7	D8H012Q01	10.1	D8H007Q01	16.2	D8H012Q01	17.2	D8H012Q01	mg l -1
TDS	15	195	D8H007Q01	271	D8H007Q01	347	D8H012Q01	463	D8H012Q01	mg l -1
Conductivity	15	24.8	D8H007Q01	38.1	D8H007Q01	52.4	D8H012Q01	70.3	D8H012Q01	mS m -1

Summary of classification: D82L n=15 Class 0

(146) Catchment F50C: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
F5H001Q01	2	@ Bruintjieshoogte Strasskirchen on Swar	53

F50C - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

(147) Catchment F50D: Total number of "H...Q" (flow gauging, quality) stations = 1.

Station	total n samples	description	map code
F5H001Q01	2	@ Bruintjieshoogte Strasskirchen on Swar	54

F50D - not classified: 0 samples between 2001-01-01 and 2005-12-31, 0 valid samples. Require at least 5.

Processing dam monitoring points:

Quaternary F60E, dam station: C9R003Q01, Samples selected: 243 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	243	7.3	C9R003Q01	8.2	C9R003Q01	8.44	C9R003Q01	8.86	C9R003Q01	-log [H+]
Fluoride	243	0.1	C9R003Q01	0.33	C9R003Q01	0.42	C9R003Q01	0.49	C9R003Q01	mg l -1
NO3(N)	243	0.02	C9R003Q01	0.111	C9R003Q01	0.296	C9R003Q01	0.617	C9R003Q01	mg l -1
Sulphate	243	11.6	C9R003Q01	156.5	C9R003Q01	234	C9R003Q01	351.3	C9R003Q01	mg l -1
Chloride	243	8	C9R003Q01	124.1	C9R003Q01	169.8	C9R003Q01	256.5	C9R003Q01	mg l -1
Sodium	243	7.8	C9R003Q01	93	C9R003Q01	136.3	C9R003Q01	177.6	C9R003Q01	mg l -1
Magnesium	243	7.5	C9R003Q01	37.4	C9R003Q01	51.7	C9R003Q01	66.8	C9R003Q01	mg l -1
TDS	243	173	C9R003Q01	643	C9R003Q01	841	C9R003Q01	1067	C9R003Q01	mg l -1
Conductivity	243	22.2	C9R003Q01	97.1	C9R003Q01	123.5	C9R003Q01	169	C9R003Q01	mS m -1

Quaternary F60E, dam station: D7R001Q01, Samples selected: 105 between 2001-01-01 and 2005-12-31.
[See summary of classification]

Variable	n samples	Minimum	recorded at	Median	recorded at	90th percentile	recorded at	Maximum	recorded at	unit
pH	105	7.53	D7R001Q01	8.2	D7R001Q01	8.54	D7R001Q01	9.23	D7R001Q01	-log [H+]
Fluoride	105	0.1	D7R001Q01	0.21	D7R001Q01	0.24	D7R001Q01	0.28	D7R001Q01	mg l -1
NO3(N)	105	0.02	D7R001Q01	0.199	D7R001Q01	0.493	D7R001Q01	0.678	D7R001Q01	mg l -1
Sulphate	105	9.2	D7R001Q01	22.7	D7R001Q01	48.3	D7R001Q01	68.3	D7R001Q01	mg l -1
Chloride	105	5	D7R001Q01	16.4	D7R001Q01	34.4	D7R001Q01	48.2	D7R001Q01	mg l -1
Sodium	105	6.6	D7R001Q01	15.1	D7R001Q01	31	D7R001Q01	46.7	D7R001Q01	mg l -1
Magnesium	105	6.5	D7R001Q01	10.4	D7R001Q01	16	D7R001Q01	39.9	D7R001Q01	mg l -1
TDS	105	143	D7R001Q01	210	D7R001Q01	301	D7R001Q01	647	D7R001Q01	mg l -1
Conductivity	105	19.7	D7R001Q01	30.3	D7R001Q01	44	D7R001Q01	78	D7R001Q01	mS m -1

Summary of dam (or lake) classifications, with classification variables, if any. Click on a dam station to go to the classification data.

Dam station	number	class	Class I variable	Class II variable	Class III variable
C9R003Q01	243	1	SO4 Cl Na Mg TDS EC
D7R001Q01	105	0

Finished calculations for Lower Orange WMA at 2006-12-18 - 15:55:26

[Chemical index page] [IWQS home page]